Help me!!!!!!!!! Also, can you tell me how to find the percentage change, i forgot lol
Find the percentage change. State whether the change is an increase or decrease.
Original:28
New:25

Original:21.2
New:10.75

Original:37
New:39

Original: $4.29
New:$2.82

Answer: = − 3 /2

Precalculus, Matrix

Rearrange terms, Combine multiplied terms into a single fraction, distribute, Multiply all terms by the same value to eliminate fraction denominators, Multiply all terms by the same value to eliminate fraction denominators . Cancel multiplied terms that are in the denominator . Multiply the numbers . Add 4 to both sides of the equation . Simplify.

Divide both sides of the equation by the same term  . Simplify

Answer:

z = -3/2

Step-by-step explanation:

Our goal here is to solve -1/3 (4+z)=-5/6 for z.

Begin by multiplying both sides by 6, to eliminate the fractions:

-2(4 + z) = -5

Isolate (4 + z) by dividing both sides by -2:  4 + z = 5/2

Finally, determine z by subtracting 4 from both sides:  z = 5/2 - 8/2 = -3/2

z = -3/2

Answer: The answer is 115<

Step-by-step explanation:

M<8 and m<5 are corresponding angles

Answer:

her current average is 96 points

Step-by-step explanation:

20% of 80 is 16

80 + 16 =96

Answer: 4

Step-by-step explanation:

Divide the sides of triangle D' by their corresponding sides on triangle D (like 32 divided by 8 and 40 divided by 10). The answer every time is 4 which means the scale factor is 4.

Answer:

The answer is 4

Step-by-step explanation:

In triangle D the top side length is 8 and in triangle D' the top side length is 32. 32 is 4 times 8, and therefore D' was factored by a scale of 4 from D.

This can be done with each side:

8x=32 --> x=4 therefore the scale factor is 4

6x=24 --> x=4 therefore the scale factor is 4

10x=40 --> x=4 therefore the scale factor is 4

Answer:

yes

Step-by-step explanation:

the output can have more than one input

the input cannot have more than one output

I hope this helps!!

Answer:

No. it does not represent a function.

Step-by-step explanation:

hope this helps.

Answer:

$39.33 (rounded to nearest cent)

Step-by-step explanation:

Cost of shirt normally = $65

Cost of shirt for 3 days = \(\frac{100-45}{100}\) × $65

                                      = \(\frac{55}{100}\) × $65

                                      = $35.75

Cost of shirt on 4th day = \(\frac{100+10}{100}\) × $35.75

                                       = \(\frac{110}{100}\) × $35.75

                                       = $39.33 (rounded to nearest cent)

Answer:453

Step-by-step explanation:

Answer:

\(\frac{16}{27}\)

Step-by-step explanation:

From the table, we notice that the total number of students is:

\(3+10+8+6=27\)

Then, along the second column of the table, we notice that the number of students who do not have a brother is:

\(10+6=16\)

So, the probability that a randomly chosen student does not have a brother is:

\(\frac{\text{number of students who do not have a brother}}{\text{total number of students}}=\frac{16}{27}\)

Answer: 3(x+9)=48

Step-by-step explanation:

So the total is 48 so we know it will =48

3 is the number of playlists she has

x is the # of pop songs

we know EACH playlist has 9 rock songs

Answer:

experimental

\(p(green \: mable) = ( \frac{5}{24} \times \frac{8}{24} \times \frac{11}{24} ) \\ = 0.03\)

theoretical

\( p(green \: mable) = \frac{12}{25} \\ = 0.48\)

Answer:

draw a line that makes a triangle and rectangle.

hypotenuse= 30

3k-4k-5k triangle

18-24-30

so the short part of triangle is 18 cm

10+10+18+24+30 equals 92

sorry for language I am not familiar with English

the perimeter of this shape is

24+10+10+30+\(\sqrt{30^{2} -24^{2} }\) = 92 cm

Answer:

Simplifying

x + -15 = 225

Reorder the terms:

-15 + x = 225

Solving

-15 + x = 225

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + x = 225 + 15

Combine like terms: -15 + 15 = 0

0 + x = 225 + 15

x = 225 + 15

Combine like terms: 225 + 15 = 240

x = 240

Simplifying

x = 240

Step-by-step explanation:

Answer:

Step-by-step explanation:

x-15 <= 225

 +15      +15

   x <= 240

Answer: The percentage change is 16%.

Step-by-step explanation:

February:

4,100 water bottles.

March:

(4,100 + 7/100 x 4,100) water bottles

(4,100 + 287) water bottles.

4,387 water bottles.

April:

(500 + 4,387) water bottles.

4,887 water bottles.

= (4,887 - 4,100) / 4,887 x 100

= 787/4,887 x 100

= 16%

The percentage change is 16%.

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Answer:

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Step-by-step explanation:

Answer:

Tops bottoms and more

Step-by-step explanation:

my brother is really good at this

Answer:

167 243/386

Step-by-step explanation:

Answer:

Step-by-step explanation:

I'll give you an example to help because I have homework ill-use #2

hers a paper

Answer:

Ordered from least to greatest:

3/4 x 4/9, 7/7 x 4/9, 8/6 x 4/9, 2 x 4/9

Step-by-step explanation:

7/7*4/9=0.4444

3/4*4/9=0.3333

8/6*4/9=0.5925925926

2*4/9=0.8888888889

Answer:

3/4 x 4/9, 7/7 x 4/9, 8/6 x 4/9, 2 x 4/9

Step-by-step explanation:

Answer:

Step-by-step explanation:

It's B.

Let's rewrite the expression like this :

2x+y=12 ⇒ y=12-2x

and try given values for x :

Answer:

8.88

Step-by-step explanation:

...

Answer:

The Correct answer is C

Step-by-step explanation:

I took the test and got it right.

Answer:

c

Step-by-step explanation:

Answer:

\(108\pi\)

Step-by-step explanation:

Since a cone is 1/3 the volume of a cylinder with equivalent dimensions, we can answer this question by multiplying the given cone volume by 3.

\(36\pi \cdot 3 = 108\pi\)

Answer:

Mean = 33.7

Median = 34.5

Mode = 34

Range = 33

After adding 26....

mean decreases by 0.7

median decreases by 0.5

mode is 34

range is 33

Step-by-step explanation:

mean = sum of all the data values/number of data values

= (18 + 19 + 20  + 34 + 34 + 35 + 37 + 42 + 47 + 51)/10
= 337/10
= 33.7

To find median arrange the values in increasing order, find the mid value

If the number of data points is even, find the average of the mid 2 data values

Arranging data values we get:
18, 19, 20, 34, 34, 35, 37, 42, 47, 51

Since there are 10 data values, take the average of the middle two:
(34 + 35)/2 = 34.5

The mode is the value that occurs most often. We see that there are two instances of 34 whereas the other values appear only once

Mode = 34

The range is highest - lowest = 51 - 18 = 33

After we add 26, we get the following data set arranged

18, 19, 20, 26, 34, 34, 35, 37, 42, 47, 51

we can calculate the stats using the same technique as above

We get the following values

mean = )(18 + 19 + 20 + 26 + 34 + 34 + 35 + 37 + 42 + 47 + 51)/11
= 33  

median = 34

mode = 34

range = 51-18 = 33

To find the decrease in mean and median subtract from the first set of values

Answer:

Step-by-step explanation:

yyyyyyyyyyyyyyyyyyyyyyyyyyy

The most appropriate to show the relationship between the number of chapters and the total pages of a book is Option A.

A graph is a visual representation of data or information, often used in mathematics to illustrate relationships between variables or to present data in a clear and concise way. There are several types of graphs, including line graphs, bar graphs, scatter plots, and pie charts, each with its own unique features and uses.

Line graphs are commonly used to show changes over time or to plot continuous data. They consist of a series of points connected by a line, with the x-axis representing the independent variable and the y-axis representing the dependent variable. Line graphs can show trends or patterns in the data and can be useful for making predictions or drawing conclusions.

Bar graphs are used to compare data between different categories or groups. They consist of a series of bars, with the height of each bar representing the value of a particular category or group. Bar graphs can be used to compare data visually and can be particularly effective for showing differences between groups.

Scatter plots are used to show the relationship between two variables. They consist of a series of data points plotted on a coordinate plane, with each point representing the value of both variables for a single observation. Scatter plots can show patterns or trends in the data and can be useful for identifying correlations or making predictions.

The most appropriate to show the relationship between the number of chapters and the total pages of a book is Option A.

To know more about relationship visit:

https://brainly.com/question/29168492

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In the given figure angle CBF and angle CEF are supplementary angles. So Option C is correct.

What is an angle ?

An angle is a mathematical term, which we can define, when two straight lines or rays meet at a common endpoint. The common point is called the vertex of an angle. The word angle comes from a Latin word named ‘angulus,’.

Given that,

A figure which contains one trapezium BCEF

And in this portion angle CBF and angle BCE are  opposite angles

and opposite angles are supplementary angles,

Hence, the pairs of angles are ∠CBF & ∠CEF

Answer: BAF and AFB, CDE and DEC, CEF and AFB

Step-by-step explanation:

Answer:

The student earns $5.25 more per hour as a store clerk

Step-by-step explanation:

\(baby \: siting \: per \: hour \\ 67.20 \div 6 \\ = 11.25 \\ store \: clerk \: per \: hour \\ 742.50 \div 45 \\ = 16.5 \\ so \: the \: clerk \: earns \: more \\ to \: know \: how \: \\ much \: more \: the \: clerk \: earns \\ substract =16.5 - 11.25 \\ = 5.25 \)

Answer:

47/125

Step-by-step explanation: